Improved machine fob



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JOSEPH REPETTI, O F PHILADELPHIA, PENNSYLVANIA.

Laim Patent N 91,267, camz .me 15, 1869.

IMPROVE!) MACHINE FOR MAKING' LEAD SHAVINGB.

The Schedule referred to in these Letten Patent and making part of the same.

Be it known that I, JOSEPH REPETTI, of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a certain new and useful Machine for Slcing Lead for manufacturing white lead, and for other useful purposes; and I do hereby declare -that the following is a full, clear, and exact description Vthat as much surface of the lead as Apossibleshould be exposed to the acetic acid, and, heretofbre,ths object has been accomplished vby finely dividing the lead, whilst in a fluid state, either ,by centrifugall force, or otherwise; but the process was not only imperfect, but also veryjvasteful, on account of the large amount of lead 10st by oxidation during the time of manipular tion.

v In this invention,the metal is melted, and cast into cylindrical blocks or ingots, c', fig. 1, thecentral hcle ruiming concentric with the axis through the whole body ofthe lead.

'lh'e upper portion el of this hole is provided with a screw-thread, fittingthat on the lower end of the spindle e, g. 3, for thepurpose of screwing the ingot on e, as in tig. 1, until it bears squarely against the surface ofthe face-plate f, Ywhich is fastened to the spindlc e, directly above-the screw.

The spindle e revolves in bearings, g g, on the extremities of the arms g' g, which latter are fastened to the column lt, by means of their hubs or bosses.

The upper one of the arms q is provided with standards, g3 g, which support the driving-shaft i, with the driving-pulleys k and k', and bevel-wheel l, which latter'is fastened to t, as is also one,v o f the pulleys', the other pulley, k, revolving loosely 'ou the shaft.

The wheel l` drives a similar one, l', fastened to the upper extremity ofthe spindle a.

The top of the column h carries the head m, the jaws of which support shcave-pulleys, n a, over which a rope, cord, or chain, o, runs.

To one end of' this rope the weight p is fastened, and, to the other, the cross-head q, which latter is connected with the knife-box s, by parallel rods, 1' r, sliding freely through bosses, rrl fr, on the cross-arms gz g2, which are castin one piece with g and g.

The knife-box s has one or more'compartments, s s, 8vo., iig. 2, for the purpose of receiving stands, t t, &c., iigs. 2 and 3, which support the con'ical frictionrollers tl t' t', of which three only are shown in iig. 2;

Between the compartments s* s? are 1ecesseswhich admit the knives a u u u,igs. 2 and 4, the latter being fastened vtothe inclinedback of the recesses, by bolts or screws, u a.

The holes through which these screws pass are slotted or elongated toward the edges of the knives, so that the latter may be adjusted in that direction, for the purpose of regulating theV thickness of the shaving cut.

The stands t t admit not only of a vertical adjustment, but the cones can also be brought toa perfect bearing against the lower surface of the ingot c, by '.means of the adjusting-screws w w,&c., which screw into the bottom of the knife-box, and the tighteningscrews lzo, which screw into the bottom of t t t. l

As the axes of thecones t t terminate in the cen' tre of the lower surface of the lead ingot c, it follows that the increasinffldiameters of the cones, and the increasing angular4 velocities of their periphery toward their bases, are in exactproportion to those of the ingot c,'g. 3, and hence, no rubbing friction takes place between c and t. 4

Immediately above the bed-plate h1, the column h carries acollar, c, having an ear or lug, fv, into which the fulcrnm-stud of the lever o? is fixed.

The collar also supports the hub or boss w of the table w, by means of which the latter may be swung around the column h., at-will, and when it is brought directly opposite to where it is shown in iig. 1, that is, when the centre of the table coincides with the centre of the spindle e the rib underneath the table comes directly above the jaw c of the lever c2, and, by depressing the arm ci, the whole table is raised, the hub w2 sliding freely up on the column h.

By reference to iig. 2, it will be seen that the knives n n do not extend to the centre of the knife-box s, so that they may cut around the screw on the spindle e, and up to the face-plate f.

The operation of the machine is as follows:

The power applied to the fast pulley k is communicated to the spindle c by means of the shaft i and bevel-wheels land l, causing e to revolve, and the ingot c, iig. 1, being screwed tightly to the lower end of e, must revolve with it. The edges of the knivesu u in the knife-box s, being constantly pressed against the lower side of theingot by the weight p, it follows that each knife will cut a shaving from said ingot proportionate in thickness to the projection of the knifeedges above the upper surface of the cone-rollers.

When the ingot has been partly consumed, as c, figs. 1 and 3, another, c, iig. '1, is in readiness on the table wl, andas soon as c has all been sliced, the knifebox s is forced down to its lowest point, the table w, with the lead, is 'swung over the knife-box, and in line with the spindle e, raised by means of the -levcr lv", and the machine started, when the screw of the spindle e will instantly enter into the nut d of 'the ingot, l the knife-box s, substantially as and for the purpose until the latter bears against and revolves with the i, specilied. face-plate f. 4. The cylindrical lead ingot c,ig. 1, with the axial The weight p is now again allowed to pull the knives li hole and screw-thread d, substantially as and for the against the lead, and thus the operation is continued. purpose specified.

I claim, as my invention- 5. The use of shaved metallic lead, for the manufac- 1. The combinatiouof the knife-box s, rods r lr, ture of white lend, and other useful purposes, when cross-head q, cord or c'lmin o, and weight p, with the the same has been produced by the machine, and in head m, slieuve-pulleys n n, and column h, substauthe manner substantially as described in this specifica.- tial!)` :is and for the purpose specified. tion.

2. The combination of the compartments s' s, re- JOSEPH REPETTI. cesses and knives u u u u, with the knife box s, substantiully as and for the purpose specified.

3. The combination of the stands t t t t, cones t t Witnesses:

A. SlNzuErME,

t, adjusting-screws w, and matching-screws w, with J. R. MAssEY. 

